Bennar’s fine, sandy beach is backed by the occasional sand dune. These sand dunes are of Special Scientific Interest, since they are constantly developing and therefore changing their environment.
Dyffryn Ardudwy, Gwynedd, LL44 2HD
It’s the smallest of Wales’s narrow-gauge railways, with a track width of only 12¼ins. So it’s dinky, it’s sweet – but it takes you on a railway ride through the dunes to some pretty big views of the Mawddach Estuary and mountains beyond.